A cross-sectional study of avian influenza in one district of Guangzhou, 2013
Since Feb, 2013, more than 100 human beings had been infected with novel H7N9 avian influenza virus. As of May 2013, several H7N9 viruses had been found in retail live bird markets (LBMs) in Guangdong province of southern China where several human cases were confirmed later. However, the real avian...
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| creator | Zhang, Haiming Peng, Cong Duan, Xiaodong Shen, Dan Lan, Guanghua Xiao, Wutao Tan, Hai Wang, Ling Hou, Jialei Zhu, Jiancui He, Riwen Zhang, Haibing Zheng, Lilan Yang, Jianyu Zhang, Zhen Zhou, Zhiwei Li, Wenhua Hu, Mailing Zhong, Jinhui Chen, Yuhua |
| description | Since Feb, 2013, more than 100 human beings had been infected with novel H7N9 avian influenza virus. As of May 2013, several H7N9 viruses had been found in retail live bird markets (LBMs) in Guangdong province of southern China where several human cases were confirmed later. However, the real avian influenza virus infection status especially H7N9 in Guangzhou remains unclear. Therefore, a cross-sectional study of avian influenza in commercial poultry farms, the wholesale LBM and retail LBMs in one district of Guangzhou was conducted from October to November, 2013. A total of 1505 cloacal and environmental samples from 52 commercial poultry farms, 1 wholesale LBM and 18 retail LBMs were collected and detected using real-time RT-PCR for type A, H7, H7N9 and H9 subtype avian influenza virus, respectively. Of all the flocks randomly sampled, 6 farms, 12 vendors of the wholesale LBM and 18 retail LBMs were type A avian influenza virus positive with 0, 3 and 11 positive for H9, respectively. The pooled prevalence and individual prevalence of type A avian influenza virus were 33.9% and 7.9% which for H9 subtype was 7.6% and 1.6%, respectively. None was H7 and H7N9 subtype virus positive. Different prevalence and prevalence ratio were found in different poultry species with partridges having the highest prevalence for both type A and H9 subtype avian influenza virus. Our results suggest that LBM may have a higher risk for sustaining and transmission of avian influenza virus than commercial poultry farms. The present study also indicates that different species may play different roles in the evolution and transmission of avian influenza virus. Therefore, risk-based surveillance and management measures should be conducted in future in this area. |
| doi_str_mv | 10.1371/journal.pone.0111218 |
| format | Article |
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As of May 2013, several H7N9 viruses had been found in retail live bird markets (LBMs) in Guangdong province of southern China where several human cases were confirmed later. However, the real avian influenza virus infection status especially H7N9 in Guangzhou remains unclear. Therefore, a cross-sectional study of avian influenza in commercial poultry farms, the wholesale LBM and retail LBMs in one district of Guangzhou was conducted from October to November, 2013. A total of 1505 cloacal and environmental samples from 52 commercial poultry farms, 1 wholesale LBM and 18 retail LBMs were collected and detected using real-time RT-PCR for type A, H7, H7N9 and H9 subtype avian influenza virus, respectively. Of all the flocks randomly sampled, 6 farms, 12 vendors of the wholesale LBM and 18 retail LBMs were type A avian influenza virus positive with 0, 3 and 11 positive for H9, respectively. The pooled prevalence and individual prevalence of type A avian influenza virus were 33.9% and 7.9% which for H9 subtype was 7.6% and 1.6%, respectively. None was H7 and H7N9 subtype virus positive. Different prevalence and prevalence ratio were found in different poultry species with partridges having the highest prevalence for both type A and H9 subtype avian influenza virus. Our results suggest that LBM may have a higher risk for sustaining and transmission of avian influenza virus than commercial poultry farms. The present study also indicates that different species may play different roles in the evolution and transmission of avian influenza virus. Therefore, risk-based surveillance and management measures should be conducted in future in this area.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0111218</identifier><identifier>PMID: 25356738</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Animals ; Avian flu ; Avian influenza ; Avian influenza viruses ; Biological evolution ; Biology and life sciences ; Birds ; Chickens ; China - epidemiology ; Cross-Sectional Studies ; Disease prevention ; Epidemics ; Farms ; Health aspects ; Infection ; Influenza ; Influenza in Birds - epidemiology ; Livestock farms ; Orthomyxoviridae ; Pandemics ; Polymerase chain reaction ; Poultry ; Poultry - virology ; Poultry farming ; Poultry industry ; Prevalence ; Risk management ; Species Specificity ; Viruses</subject><ispartof>PloS one, 2014-10, Vol.9 (10), p.e111218</ispartof><rights>COPYRIGHT 2014 Public Library of Science</rights><rights>2014 Zhang et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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The pooled prevalence and individual prevalence of type A avian influenza virus were 33.9% and 7.9% which for H9 subtype was 7.6% and 1.6%, respectively. None was H7 and H7N9 subtype virus positive. Different prevalence and prevalence ratio were found in different poultry species with partridges having the highest prevalence for both type A and H9 subtype avian influenza virus. Our results suggest that LBM may have a higher risk for sustaining and transmission of avian influenza virus than commercial poultry farms. The present study also indicates that different species may play different roles in the evolution and transmission of avian influenza virus. Therefore, risk-based surveillance and management measures should be conducted in future in this area.</description><subject>Animals</subject><subject>Avian flu</subject><subject>Avian influenza</subject><subject>Avian influenza viruses</subject><subject>Biological evolution</subject><subject>Biology and life sciences</subject><subject>Birds</subject><subject>Chickens</subject><subject>China - epidemiology</subject><subject>Cross-Sectional Studies</subject><subject>Disease prevention</subject><subject>Epidemics</subject><subject>Farms</subject><subject>Health aspects</subject><subject>Infection</subject><subject>Influenza</subject><subject>Influenza in Birds - epidemiology</subject><subject>Livestock farms</subject><subject>Orthomyxoviridae</subject><subject>Pandemics</subject><subject>Polymerase chain reaction</subject><subject>Poultry</subject><subject>Poultry - virology</subject><subject>Poultry farming</subject><subject>Poultry 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One</addtitle><date>2014-10-30</date><risdate>2014</risdate><volume>9</volume><issue>10</issue><spage>e111218</spage><pages>e111218-</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Since Feb, 2013, more than 100 human beings had been infected with novel H7N9 avian influenza virus. As of May 2013, several H7N9 viruses had been found in retail live bird markets (LBMs) in Guangdong province of southern China where several human cases were confirmed later. However, the real avian influenza virus infection status especially H7N9 in Guangzhou remains unclear. Therefore, a cross-sectional study of avian influenza in commercial poultry farms, the wholesale LBM and retail LBMs in one district of Guangzhou was conducted from October to November, 2013. A total of 1505 cloacal and environmental samples from 52 commercial poultry farms, 1 wholesale LBM and 18 retail LBMs were collected and detected using real-time RT-PCR for type A, H7, H7N9 and H9 subtype avian influenza virus, respectively. Of all the flocks randomly sampled, 6 farms, 12 vendors of the wholesale LBM and 18 retail LBMs were type A avian influenza virus positive with 0, 3 and 11 positive for H9, respectively. The pooled prevalence and individual prevalence of type A avian influenza virus were 33.9% and 7.9% which for H9 subtype was 7.6% and 1.6%, respectively. None was H7 and H7N9 subtype virus positive. Different prevalence and prevalence ratio were found in different poultry species with partridges having the highest prevalence for both type A and H9 subtype avian influenza virus. Our results suggest that LBM may have a higher risk for sustaining and transmission of avian influenza virus than commercial poultry farms. The present study also indicates that different species may play different roles in the evolution and transmission of avian influenza virus. Therefore, risk-based surveillance and management measures should be conducted in future in this area.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25356738</pmid><doi>10.1371/journal.pone.0111218</doi><oa>free_for_read</oa></addata></record> |
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| recordid | cdi_plos_journals_1618835888 |
| source | MEDLINE; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Public Library of Science (PLoS); PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Animals Avian flu Avian influenza Avian influenza viruses Biological evolution Biology and life sciences Birds Chickens China - epidemiology Cross-Sectional Studies Disease prevention Epidemics Farms Health aspects Infection Influenza Influenza in Birds - epidemiology Livestock farms Orthomyxoviridae Pandemics Polymerase chain reaction Poultry Poultry - virology Poultry farming Poultry industry Prevalence Risk management Species Specificity Viruses |
| title | A cross-sectional study of avian influenza in one district of Guangzhou, 2013 |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-15T07%3A07%3A34IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_plos_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=A%20cross-sectional%20study%20of%20avian%20influenza%20in%20one%20district%20of%20Guangzhou,%202013&rft.jtitle=PloS%20one&rft.au=Zhang,%20Haiming&rft.date=2014-10-30&rft.volume=9&rft.issue=10&rft.spage=e111218&rft.pages=e111218-&rft.issn=1932-6203&rft.eissn=1932-6203&rft_id=info:doi/10.1371/journal.pone.0111218&rft_dat=%3Cgale_plos_%3EA417144997%3C/gale_plos_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1618835888&rft_id=info:pmid/25356738&rft_galeid=A417144997&rft_doaj_id=oai_doaj_org_article_1e00105c845b4737a41e83e62420f837&rfr_iscdi=true |